MS4PMUHVT Multi-Stage Electronic Temperature Control with Relay Pack Product/Technical Bulletin
15
Alarm and Fault Display Codes
These alarm and fault codes flash on the LED display
when the control detects the following faults:
Table 3: Alarm Display Codes (Flashing)
Display
Code
Meaning
System Status
F1
Indicates an open or shorted main temperature
sensor.
Alarm message displays. Correct problem and cycle
power to reset control.
A1
Binary input is open for longer than the Binary Input
Time Delay and Binary Input Mode Option 1 is
selected.
Control output is switched off; alarm message displays.
Correct the condition to reset.
OF
Binary input is open and Binary Input Mode
Option 3 selected.
Control output is switched off. Close the digital input to
reset.
HI
Main sensor temperature has reached or exceeded
the High Temperature Alarm value.
Alarm message displays. Correct the condition to reset.
LO
Main sensor temperature has reached or fallen
below the Low Temperature Alarm value.
Alarm message displays. Correct the condition to reset.
EE
Program failure
Alarm message displays, other outputs off. Replace
control.
Table 4: Status Codes (Steady)
Status Code
Indicates:
On
Auxiliary temperature sensor (S2) is not connected or, if it is connected, the sensor (or binary input) is
open or shorted.
OF
Binary input is closed.
Ordering Information
Table 5: Ordering Information
Item Code
Description
Shipping weight
MS4PMUHVT-11C
Relay pack temperature control with two A99B sensors
2.9 lb (1320 g)
MS4PM12C-11C
Replacement control module for use in relay pack only
1.6 lb (726 g)
RP4MSUHV-1C
Relay pack without control module
2.3 lb (1060 g)
A99BB-200C
Sensor, cable length: 6-1/2 ft (2 m)
0.13 lb (60 g)
Repair and Replacement
Field repair of the control should not be made. In case
of a defective or improperly functioning control, please
check with your nearest Johnson Controls/PENN
representative.
Relay Electrical Ratings
Relay Ratings in Table 6 are for ambient temperatures
in the range -40 to 111
F (-40 to 44
C). Derate
electrical ratings 3.45% per 1F
in the range
111 to 140
F. Derate electrical ratings 6.25% per 1C
in the range 44 to 60
C.
